should out right liars be banned for life ?

hi everyone, i saw this thread in the recent posts and i decided to take a look and see what was going on. i know that i am still new here and i appreciate all the help and information that i have been taught/given. At first, i thought that this forum was "too good to be true" in a sense that i was worried that i had run into a big scam or something. It is a dangerous business that you are in and it's a shame that it has to be that way. Unfortunatly people have exploited a career (or hobby) choice for their own personal gain and i don't blame you for being concerned on who's twisted ears your help could become victim of. Anyhow i am on a roll tonight obviously but i guess to sum it up - if the forum members here become to skeptical of newcomers then people like me with a honest reason for wanting to learn could be shut out but i also think that it's impossible to weed out these "liars" easily. I believe that they will show their true colors quicker than they think they do especially to a collection of very intelligent caring people that i have come to know you all as. Sorry for the rant - Hope i stayed close to the topic...